Nut-lock.



C. S. 'HASCALL.

NUT LOCK.

APPLICATION FILED NOV. 21. 1914.

Patented Aug. '17, 1915.

wi bnaowo oi-innnns snAscALL, or rnovinnivon, :anonn ISLAND.

NUT-LOCK.

menses.

Specification of Letters Patent.

Patented Aug. 1'7, 1915.

Application filed November 21, 1914. Serial No. 873,355.

To all whom it may concern .7

Be it known that 1, CHARLES S. HASCALL,

-' citizen of the United States, residing at Providence, in the county of Providence and- State of Rhode Island, have invented certain new and useful Improvements in Nut- Locks, of which the following is a pecification.

This invention relates-to new and useful improvements in nut locks and has as its primary object to provide a means for positively locking the nut upon the bolt which in use, may be readily applied and as easily removed, and which will be adapted to lock the nut upon the bolt at any point in'its turning movement thereon.

The invention has as a further object to provide a nut lock which may be applied to a conventional type of nut without the necessity of structural change therein, and which will be composed of few and Simple parts to thus comprehend an inexpensive construction. And a still further object of the invention is to generally improve the construction and increase the efiicienoy of devices of the above described character.

With these and other objects in vi w,-my invention will be more fully describe illustrated in the accompanying drawings and then specifically pointed out in the claims which are attached to and form a part of this a iplication. v

In t e accompanyingdrawings, Figure 1 is a perspectiveview of my improved nut lock showing the parts thereof detached but in proper operative position. Fig. 2 is a top plan view showing the parts of the nut lock assembled upon the bolt and illustrating the manner in which the locking key is disposed to engage the locking washer provided, and

. Fig. 3 is a fragmentary sectional view more particularly illustrating the arrangement of the locking key employed and the manner in which it co-acts with'the locking washer.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawing by the'same reference characters. r In carrying out my invention, I employ a bolt 10, which in the drawings, has been I illustrated .in position within the work conventionally shown at. 11. The bolt 10 may be of anyconventional type. and is screw 5 threaded adjacent one extremity to receive the nut 12.- .Formed in the bolt' 10. and

traversing the thrcadedportion thereof, is a longitudinally extending groove or seat 18,

the said groove opening through the end of the bolt. The purpose of this groove will presently appear. Disposed for detachable connection with the bolt 10' and arranged to seat against the work, is a flat washer 14' Y which is bent at one extremity at substantially right angles to provide a base 19 which is also substantially straight. At the outer extremity of the base 19 opposite the shank18, the length of material is again bent at substantially right angles to the said base inwardly toward the shank 18 and in substantial alinement therewith, to provide a dog or catch 20, the shank of which adjacent its free end is provided with a laterally projectingshoulder 21 extending inwardly toward the shank. 18, the adjacent terminal of the shank being thence again defiected outwardly away from the shank 18 as shown at 22.

The key thus formed is disposed to die tachably engage the bolt, with the shank 18 thereof seating within the groove 13, and with the base 19 extending radially through the slot 16 of the washer 14, the dog 20 being thus disposed to project outwardly away from the work. The particular disposition of the locking key 17 is best shown in Fig. 3 of the drawings.

After assembling the washer 14: upon the bolt 10 in the manner described, and arranging the key 17 to engage within the groove 13, as above set forth, the nut 12is applied,

it being understood that the groove 13 is of such depth as to' receive the shank 18 of the key so that when the nut 12 is screweddown' isposed for detachable connection with :the bolt 12 and arranged to coact with the key 17 is the locking member 23', the said locking member being in the form of a flat washer having a central opening formed therein to receive the nut 12 which opening is provided with sides disposed to engage the flat sides of the nut. The locking member 23 is preferably. provided with an annular outer edge and formed in the said edge,

extending throughout a portion of the mar gin of the member circumferentially thereoi, equal to at least as many degrees as are included by one flat side of the nut 12.

The nut being applied to the bolt in the manner set forth, the locking member 23 is positioned over the nut with the teeth 24: thereof disposed for engagement with the dog 20 of the key 17. As best shown in Fig. 3 of the drawings, the dog 20 is so arranged as to engage between the teeth 24 of the locking member 23 with the shoulder 21 extending inwardly over the outer face of the member, it being understood that when applying the member 23, the said member upon coming in contact with the shoulder 21 of the dog 20 will spring the said dog outwardly away from the nut 12 to permit the member to seat against the adjacent outer face of the member 23.

The key 17 is thus disposed to operatively connect the nut 12 with the bolt 10 to prevent retrograde movement of the nut and attention is called to the fact that no structural change in the nut is required. Furthermore, since the shank 18 of the key 17 may 'fit loosely within the groove 13 and since the slot 16 is wider than the base 19 of the said key, slight turning movement of the key will be permitted so thatin the event should the dog 20 fall into alinementwith .anyof the teeth 24 of the locking member.

23 upon the application of the said member to the nut 12, the said key may be turned within the seat 13 and within the slot 16 to one side or the other a sufficient distance to permit the dog 20 to engage between the adjacent teeth. While this slight turning movement of the key 17 within the groove 13 will permit a slight retrograde movement of the nut 12, in use, still such movement will not be of such a degree as to afiect the thorough efficiency of the device.

It -will further be noted that since the teeth 24 extend, circumferehtially of the locking member 23 a distance equal to as many degrees as are included by one fiat side of the nut 12, the said nut may be locked upon the bolt at any point in its turning movement thereon. In this connection at- I tention is directed to the fact that the locking member 23 will be held in position upon the nut 12 by the dog 20 of the key 17 the said dog, through its resilient action, nor-' mally' engaging the said locking member with the shoulder 21 of the dog projecting over the outer face of the locking member. This is an important feature of advantage since'the dog 20 through such arrangement,

serves the dual function of operatively connecting the nut 12 withthe bolt and of also maintaining the looking member 23 in position upon the nut. In order to efi'ect a release of the locking member 23, whence the nut 12, the key 17, and the washer 14; may be readily removed from the bolt as will be readily understood, a screw-driver or other tool may be inserted beneath the member 23 adjacent 'the dog 20 and the said member pried outwardly to ride over the shoulder 21 out of engagement with the said dog.

It will therefore be seen that I provide a 'to receive a nut and provided with a seat,

of a key operatively engaging in the seat and extending beneath the nut, the said key being provided with an upstanding dog having an inwardlyextending shoulder formed thereon, and a locking member fitting over the nut and engaging said dog with thesaid shoulder projecting inwardly over the outer face of thesaid member.

2. The combination with a bolt having a seat formed therein and disposed to receive a nut, of a Washer-fitting .over the bolt and having a radially extending slot formed therein, a key including a shank engaging in said seat and a base extending through said slot, the said base having an upstanding dog formed thereon provided adjacent its free extremity with an inwardly projecting curved shoulder, and a lockingmember fittingover the nut and having a pluiality of circumferentially spaced teeth formed in the outer edge thereof and upon one side of the member, said teeth engaging said dog with the shoulder of the dog extending in-' wardly over'the outer face of the locking member to thereby retain the said member in position upon the nut.;

3. The combinationw-ith a bolt having a I seat formed therein and dis osed to receive a nut having flat sides, of a ey engaging in said seat and provided with an upstanding dog having an inwardly projecting shoulder formed thereon, and a locking member fitting over the nut and having a plurality of circumferentially spaced teeth formed in the outer edge thereof and upon'one side of the said member disposed for engagement with said dog with the shoulder of the 'dog engaging over the outer face of the said memher, the said teeth extending circu'mferen- 'tially of the locking'member a distance not one flat sideiface of the nut. 4:; The combination with a bolt disposed to receive a nut and provided With a seat,

less than as many degrees as are included of a key operatively engaging in said seat to receive a nut and provided with a seat, --of akey operatively-engaging in said seat, I and alocking member engaging the nut and adapted for detachable cooperative engagement with said key. a 6. The-combination with a bolt disposed to'receive a nut and provided with a seat,

of a vkey operatively engaging in said seat and provided with a dog arranged substamj Copies of this patent may be obtained for tially parallel to the longitudinal axis of the bolt, and a locking member engaging the nut and mounted concentrically to the'said axis, the locking member 'being adapted for detachable cooperative engagement with said dog.

7 The combination with a bolt disposed to receive a nut and provided with a seat, of a key mounted in'said seat eccentrically to the longitudinal axis of the bolt, anda looking member engaging the nut and a. v

mounted concentrically to the said axis, the

locking member being adapted for cooperative engagement with the key.

In testimony whereof I aiiix my signature inpresence of two witnesses."

CHARLES s. HASCALL. [11. 8.

Witnesses: vMARY E. Hasoann, EBnN HILL.

five cents each, by addressing the fiflommissioner of Patents,

Washington, 3). G. 

